Detroit Diesel — Low Idle Speed Adjustment
Adjustments · governor low idle
From a Detroit Diesel service manual — check it applies to your exact model before use.
Before you start
- If the low idle setting is lower than the minimum allowed, the engine will stall and run rough.
Procedure
- Loosen the locknut which secures the low idle adjusting screw.
- Turn the adjusting screw to obtain the specified idle speed. Clockwise reduces r/min; counterclockwise increases r/min.
- Tighten the locknut when the specified speed is reached.
Source: Detroit Diesel service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.